RAM® Mounts Motorcycle Fork Stem Ball Base with Rubber Expansion Plug (RAM-B-342U)

RAM® Mounts Motorcycle Fork Stem Ball Base with Rubber Expansion Plug (RAM-B-342U)

The RAM® Mounts Motorcycle Fork Stem Ball Base with Rubber Expansion Plug (RAM-B-342U) is one of the most popular and professional motorcycle mounting solutions for riders who want a clean, centered, and vibration-resistant device mounting setup. Designed to fit directly into the cylindrical bore wall of motorcycle fork stems, this premium fork stem mount provides a secure foundation for smartphones, GPS navigation units, action cameras, radar detectors, and other compatible accessories.

Featuring a B Size 1" RAM® rubber ball, the RAM-B-342U seamlessly integrates with any RAM® B-size double socket arm, delivering near-infinite adjustability and optimal viewing angles. Constructed from powder-coated marine-grade aluminum and equipped with a durable rubber expansion plug system, this mount is built to perform reliably in demanding road, touring, racing, and adventure riding environments.

Key Features

• Fork Stem Mounting Solution: Designed to fit securely inside motorcycle fork stem holes.
• Universal Compatibility: Fits fork stem bore diameters ranging from 12mm to 38mm (0.5" to 1.49").
• Integrated B-Size Ball: Includes a 1" RAM® rubber ball compatible with all RAM® B-size mounting components.
• Clean Cockpit Installation: Provides a centered mounting position without cluttering handlebars.
• Near-Infinite Adjustability: RAM® ball-and-socket technology allows precise positioning and viewing angles.
• Vibration-Resistant Design: Helps minimize vibration transfer to mounted devices.
• Heavy-Duty Construction: Manufactured from powder-coated marine-grade aluminum.
• Weather & Corrosion Resistant: Built to withstand harsh riding conditions and outdoor exposure.
• Ideal for Multiple Devices: Supports smartphone holders, GPS mounts, action camera mounts, and more.
• Lifetime Warranty: Backed by RAM® Mounts' trusted lifetime warranty.

What's Included

• 1 × RAM® Motorcycle Fork Stem Ball Base
• 1 × Expansion Plug for 12mm – 38mm Fork Stem Holes
• 1 × M5 x 60mm Machine Screw
• 1 × Steel Washer Set
• 1 × Nut Pocket Washer Set
• 1 × Brass Nylock Nut

Compatibility

• Sport Bikes
• Superbikes
• Adventure Motorcycles
• Touring Motorcycles
• Street Bikes
• Track Motorcycles
• Motorcycles with Hollow Fork Stem Openings

Technical Specifications

• Product Model: RAM-B-342U
• Mount Type: Motorcycle Fork Stem Ball Base
• Installation Method: Rubber Expansion Plug System
• Fork Stem Compatibility: 12mm – 38mm (0.5" – 1.49") Diameter
• Ball Size: B Size (1")
• Standard Load Capacity: 2 lbs (0.91 kg)
• Heavy-Duty Load Capacity: 1 lb (0.45 kg)
• Material: Marine-Grade Aluminum
• Finish: Powder-Coated
• Packaging Type: Poly Bag
• Product Weight: 0.28 lb

Ideal Applications

• Motorcycle Smartphone Mounting
• Motorcycle GPS Navigation Systems
• Action Camera Installations
• Motorcycle Touring Accessories
• Track Day Device Mounting
• Adventure Riding Navigation Setups
• Radar Detector Mounting
• Performance Motorcycle Cockpit Upgrades

Why Choose the RAM® Motorcycle Fork Stem Ball Base?

The RAM-B-342U is trusted by motorcycle enthusiasts worldwide because it offers one of the cleanest and most secure mounting locations available. By utilizing the center fork stem opening, the mount creates a factory-style appearance while keeping devices positioned directly within the rider's line of sight.

Its expandable rubber plug system ensures a firm installation inside the fork stem bore, while the RAM® B-size ball provides compatibility with a vast range of RAM® mounting arms, cradles, and accessories. Whether you're navigating with a GPS, monitoring ride data, or recording adventures with an action camera, this fork stem mount delivers exceptional stability and flexibility.